Year 1=extremely underdeveloped to 7=well developed and efficient by international standards 2007 3.2607419237177 2008 3.31386983690344 2009 3.6729288784 2010 3.7212821581 2011 4 2012 4.3 2013 4.4 2014 4.3 2015 4.30643171158071 2016 4.3 2017 4.3